do not install cfgtool

cfgtool/wscript

@@ -1,10 +1,5 @@
 #!/usr/bin/env python
 from waflib.extras import autowaf as autowaf
-from waflib import Options, TaskGen
-import waflib.Logs as Logs, waflib.Utils as Utils
-import shutil
-import sys
-import time
 
 top = '.'
 out = 'build'
@@ -19,6 +14,8 @@ def configure(conf):
 
 def build(bld):
     obj = bld (features = 'cxx c cxxprogram')
-    obj.source    = 'cfgtool.cc'
-    obj.target    = 'cfgtool'
-    obj.use       = [ 'libpbd', 'libardour', ]
+    obj.source       = 'cfgtool.cc'
+    obj.target       = 'cfgtool'
+    obj.use          = [ 'libpbd', 'libardour', ]
+    obj.use          = [ 'libpbd', 'libardour', ]
+    obj.install_path = None